Jane Austen’s novels present a classic example of social mobility. Seen in her novels is change of culture, exposure to a new culture, a new set of values, virtues or morality. The novelist uses satire to poke fun at the behavior of some class-conscious characters....

Molluscs play important ecological roles in the different aquatic and terrestrial ecosystems of the world.Molluscs are extremely diverse in tropical and temperate regions but can be found almost at all altitudes....